Adjustment data at December 31 follow: a. As of December 31, Middletown had $650 of Prepaid Insurance remaining, b. At the end of the month, Middletown had $1,100 of office supplies remaining, c. Depreciation on the building is $1,200 d. Middletown pays its employees weekly on Friday. Its employees earn $2,600 for a five-day workweek. December 31 falls on Wednesday this year. e. On November 20. Middletown contracted to perform services for a client receiving $2,800 in advance. Middletown recorded this receipt of cash as Unearned Revenue. As of December 31, Middletown has $2,500 still unearned